<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>点云处理平台</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            font-family: 'Segoe UI', 'HarmonyOS Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color-scheme: light;
            --primary: #3c5bff;
            --primary-dark: #2a3aea;
            --primary-soft: rgba(60, 91, 255, 0.1);
            --secondary: #28d4b1;
            --text-strong: #0f172a;
            --text-base: #1f2937;
            --text-light: #64748b;
            --bg: #f5f7fb;
            --surface: rgba(255, 255, 255, 0.88);
            --border: rgba(148, 163, 184, 0.22);
            --shadow: 0 24px 48px rgba(15, 23, 42, 0.08);
            --radius-large: 28px;
            --radius-medium: 20px;
            --radius-small: 14px;
            --transition: all 0.28s ease;
        }
        
        body {
            min-height: 100vh;
            background:
                radial-gradient(circle at 10% 20%, rgba(60, 91, 255, 0.18), transparent 48%),
                radial-gradient(circle at 90% 10%, rgba(40, 212, 177, 0.22), transparent 52%),
                linear-gradient(180deg, #f8faff 0%, #eef2ff 38%, #e2e8f0 100%);
            color: var(--text-base);
            padding: 32px clamp(16px, 6vw, 48px) 64px;
        }

        a {
            color: inherit;
        }

        .page-shell {
            max-width: 1280px;
            margin: 0 auto;
            position: relative;
        }

        .site-chrome {
            backdrop-filter: blur(22px);
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: var(--radius-large);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .site-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: clamp(20px, 3vw, 32px) clamp(24px, 4vw, 48px);
            gap: 24px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .brand-icon {
            width: 48px;
            height: 48px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(60, 91, 255, 0.25), rgba(40, 212, 177, 0.35));
            display: grid;
            place-items: center;
            font-size: 1.6rem;
            color: var(--primary);
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .brand-text strong {
            font-size: 1.2rem;
            letter-spacing: 0.04em;
            color: var(--text-strong);
        }

        .brand-text span {
            font-size: 0.86rem;
            color: var(--text-light);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: clamp(12px, 2.5vw, 28px);
        }

        .nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            text-decoration: none;
            position: relative;
            padding: 8px 0;
            transition: color 0.2s ease;
        }

        .nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 999px;
            background: linear-gradient(120deg, var(--primary), var(--secondary));
            transform: scaleX(0);
            transform-origin: right center;
            transition: transform 0.2s ease;
        }

        .nav a:hover {
            color: var(--text-strong);
        }

        .nav a:hover::after {
            transform: scaleX(1);
            transform-origin: left center;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, rgba(42, 58, 234, 0.85) 52%, var(--secondary) 100%);
            color: #fff;
            padding: 12px 20px;
            border-radius: 999px;
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 16px 32px rgba(60, 91, 255, 0.28);
            transition: var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 22px 40px rgba(60, 91, 255, 0.35);
        }

        .hero {
            position: relative;
            overflow: hidden;
            padding: clamp(40px, 6vw, 68px) clamp(24px, 4vw, 64px);
            border-radius: var(--radius-large);
        }

        .hero::before,
        .hero::after {
            content: "";
            position: absolute;
            border-radius: 50%;
            filter: blur(90px);
            opacity: 0.45;
            z-index: 0;
        }

        .hero::before {
            width: 420px;
            height: 420px;
            background: rgba(60, 91, 255, 0.32);
            top: -160px;
            right: -200px;
        }

        .hero::after {
            width: 380px;
            height: 380px;
            background: rgba(40, 212, 177, 0.26);
            bottom: -140px;
            left: -160px;
        }

        .hero-slider {
            position: relative;
            width: 100%;
            min-height: clamp(420px, 70vh, 560px);
            transition: height 0.6s ease;
            z-index: 1;
        }

        .hero-slide {
            position: absolute;
            inset: 0;
            opacity: 0;
            transform: translateX(60px);
            transition: opacity 0.6s ease, transform 0.6s ease;
            pointer-events: none;
        }

        .hero-slide.is-active {
            opacity: 1;
            transform: translateX(0);
            pointer-events: auto;
        }

        .hero-layout {
            height: 100%;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: clamp(32px, 6vw, 80px);
            align-items: center;
            position: relative;
        }

        .hero-copy {
            position: relative;
            z-index: 2;
            display: grid;
            gap: clamp(24px, 4vw, 32px);
        }

        .hero-title {
            font-size: clamp(2.8rem, 5vw, 4rem);
            color: var(--text-strong);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }

        .hero-title span {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-light);
            max-width: 640px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
        }

        .metric-card {
            background: rgba(255, 255, 255, 0.92);
            border-radius: var(--radius-small);
            padding: 16px 20px;
            border: 1px solid rgba(148, 163, 184, 0.2);
            display: grid;
            gap: 6px;
        }

        .metric-card strong {
            font-size: 1.2rem;
            color: var(--text-strong);
        }

        .metric-card span {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.4;
        }

        .hero-visual {
            position: relative;
            z-index: 1;
            background: rgba(15, 23, 42, 0.9);
            border-radius: var(--radius-large);
            padding: clamp(28px, 4vw, 40px);
            border: 1px solid rgba(60, 91, 255, 0.35);
            box-shadow: inset 0 0 0 1px rgba(60, 91, 255, 0.12), 0 30px 60px rgba(15, 23, 42, 0.32);
            overflow: hidden;
        }

        .hero-visual::after {
            content: "";
            position: absolute;
            inset: 26px;
            border-radius: var(--radius-medium);
            border: 1px dashed rgba(148, 163, 184, 0.25);
            pointer-events: none;
        }

        .hero-panel {
            position: relative;
            z-index: 1;
            display: grid;
            gap: 20px;
            color: #e2e8f0;
        }

        .hero-panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.92rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: rgba(226, 232, 240, 0.75);
        }

        .hero-panel-list {
            list-style: none;
            display: grid;
            gap: 16px;
            margin: 0;
            padding: 0;
        }

        .hero-panel-item {
            display: grid;
            grid-template-columns: auto 1fr auto;
            gap: 18px;
            align-items: center;
            padding: 18px 20px;
            border-radius: var(--radius-medium);
            background: linear-gradient(135deg, rgba(60, 91, 255, 0.22), rgba(40, 212, 177, 0.18));
            border: 1px solid rgba(148, 163, 184, 0.24);
            box-shadow: 0 18px 32px rgba(15, 23, 42, 0.22);
        }

        .hero-panel-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            font-size: 1.8rem;
            background: rgba(255, 255, 255, 0.18);
            color: #f8fafc;
        }

        .hero-panel-item strong {
            display: block;
            color: #f8fafc;
            font-size: 1.05rem;
        }

        .hero-panel-item p {
            margin-top: 4px;
            font-size: 0.9rem;
            color: rgba(226, 232, 240, 0.75);
            line-height: 1.6;
        }

        .hero-panel-step {
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(40, 212, 177, 0.22);
            border: 1px solid rgba(40, 212, 177, 0.35);
            font-size: 0.78rem;
            color: #d1fae5;
            letter-spacing: 0.04em;
        }

        .hero-bullets {
            list-style: none;
            display: grid;
            gap: 12px;
            font-size: 0.96rem;
            color: var(--text-light);
            margin: 0;
            padding: 0;
        }

        .hero-bullets li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .hero-bullets li::before {
            content: "•";
            color: var(--primary);
            font-size: 1.2rem;
            line-height: 1;
        }

        .hero-visual--code {
            background: radial-gradient(120% 120% at 20% 20%, rgba(40, 212, 177, 0.22), transparent 70%), rgba(15, 23, 42, 0.94);
        }

        .code-header {
            font-size: 0.9rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: rgba(226, 232, 240, 0.7);
        }

        .code-metric-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 14px;
        }

        .code-chip {
            padding: 14px 16px;
            border-radius: var(--radius-small);
            background: rgba(60, 91, 255, 0.18);
            border: 1px solid rgba(148, 163, 184, 0.24);
            display: grid;
            gap: 6px;
        }

        .code-chip span {
            font-size: 0.75rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: rgba(226, 232, 240, 0.68);
        }

        .code-chip strong {
            font-size: 1.1rem;
            color: #f8fafc;
        }

        .code-snippet {
            background: rgba(9, 14, 34, 0.7);
            border-radius: var(--radius-small);
            padding: 20px 22px;
            font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
            font-size: 0.82rem;
            color: rgba(226, 232, 240, 0.88);
            line-height: 1.7;
            border: 1px solid rgba(60, 91, 255, 0.3);
            white-space: pre-wrap;
        }

        .code-footer {
            font-size: 0.82rem;
            color: rgba(209, 250, 229, 0.82);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-visual--dashboard {
            background: radial-gradient(140% 120% at 80% 10%, rgba(60, 91, 255, 0.24), transparent 65%), rgba(15, 23, 42, 0.92);
        }

        .dashboard-header {
            font-size: 0.92rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: rgba(226, 232, 240, 0.7);
            margin-bottom: 12px;
        }

        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
        }

        .dashboard-card {
            padding: 18px 20px;
            border-radius: var(--radius-medium);
            background: rgba(60, 91, 255, 0.18);
            border: 1px solid rgba(148, 163, 184, 0.22);
            display: grid;
            gap: 6px;
            color: rgba(226, 232, 240, 0.88);
        }

        .card-label {
            font-size: 0.78rem;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: rgba(226, 232, 240, 0.72);
        }

        .dashboard-card strong {
            font-size: 1.35rem;
            color: #f8fafc;
        }

        .card-sub {
            font-size: 0.84rem;
            color: rgba(226, 232, 240, 0.62);
        }

        .dashboard-footer {
            margin-top: 14px;
            font-size: 0.84rem;
            color: rgba(209, 250, 229, 0.82);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-controls {
            position: absolute;
            bottom: clamp(24px, 5vw, 48px);
            left: clamp(24px, 4vw, 64px);
            right: clamp(24px, 4vw, 64px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            z-index: 3;
        }

        .hero-arrows {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .hero-arrow {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            border: 1px solid rgba(148, 163, 184, 0.4);
            background: rgba(255, 255, 255, 0.1);
            color: #f8fafc;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .hero-arrow:hover {
            background: rgba(60, 91, 255, 0.25);
            border-color: rgba(60, 91, 255, 0.5);
            transform: translateY(-2px);
        }

        .hero-dots {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hero-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            border: none;
            background: rgba(148, 163, 184, 0.45);
            cursor: pointer;
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .hero-dot.is-active {
            background: linear-gradient(135deg, rgba(40, 212, 177, 0.92), rgba(60, 91, 255, 0.92));
            transform: scale(1.25);
        }

        section.section {
            padding: clamp(40px, 6vw, 72px) clamp(24px, 4vw, 64px);
            border-top: 1px solid rgba(148, 163, 184, 0.16);
            background: rgba(255, 255, 255, 0.88);
        }

        .section-header {
            display: grid;
            gap: 16px;
            margin-bottom: clamp(28px, 5vw, 44px);
        }

        .section-title {
            font-size: clamp(1.9rem, 3vw, 2.6rem);
            color: var(--text-strong);
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-light);
            max-width: 720px;
        }

        .module-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: clamp(18px, 4vw, 32px);
        }

        .module-card {
            border-radius: var(--radius-medium);
            background: rgba(248, 250, 255, 0.92);
            border: 1px solid rgba(148, 163, 184, 0.22);
            padding: 28px;
            display: grid;
            gap: 18px;
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .module-card::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(60, 91, 255, 0.16), rgba(40, 212, 177, 0.16));
            opacity: 0;
            transition: var(--transition);
            z-index: 0;
        }

        .module-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 22px 44px rgba(15, 23, 42, 0.12);
            border-color: rgba(60, 91, 255, 0.4);
        }

        .module-card:hover::after {
            opacity: 1;
        }

        .module-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(60, 91, 255, 0.22), rgba(40, 212, 177, 0.3));
            display: grid;
            place-items: center;
            font-size: 1.8rem;
            color: var(--primary-dark);
            z-index: 1;
        }

        .module-card h3 {
            font-size: 1.28rem;
            color: var(--text-strong);
            z-index: 1;
        }

        .module-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            z-index: 1;
        }

        .module-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            z-index: 1;
        }

        .tag {
            font-size: 0.78rem;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(60, 91, 255, 0.12);
            color: var(--primary-dark);
            letter-spacing: 0.02em;
        }

        .module-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.85rem;
            color: rgba(15, 23, 42, 0.55);
            z-index: 1;
        }

        .module-meta span:last-child {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
        }

        .split-layout {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: clamp(24px, 5vw, 40px);
        }

        .split-card {
            background: rgba(248, 250, 255, 0.92);
            border-radius: var(--radius-medium);
            border: 1px solid rgba(148, 163, 184, 0.2);
            padding: clamp(24px, 4vw, 36px);
            display: grid;
            gap: 18px;
        }

        .split-card h3 {
            font-size: 1.2rem;
            color: var(--text-strong);
        }

        .split-card ul {
            list-style: none;
            display: grid;
            gap: 12px;
        }

        .split-card li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-light);
            font-size: 0.95rem;
        }

        .split-card li::before {
            content: "•";
            color: var(--primary);
            font-size: 1.2rem;
            line-height: 1;
        }

        .timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: clamp(18px, 3vw, 28px);
            position: relative;
        }

        .timeline::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(60, 91, 255, 0.12), rgba(40, 212, 177, 0.18));
            opacity: 0.4;
            border-radius: var(--radius-medium);
        }

        .timeline-step {
            background: rgba(255, 255, 255, 0.92);
            border-radius: var(--radius-medium);
            padding: 26px;
            border: 1px solid rgba(148, 163, 184, 0.22);
            display: grid;
            gap: 14px;
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }

        .timeline-step:hover {
            transform: translateY(-6px);
            border-color: rgba(60, 91, 255, 0.4);
            box-shadow: 0 18px 32px rgba(15, 23, 42, 0.12);
        }

        .step-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary-dark);
            letter-spacing: 0.05em;
        }

        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: grid;
            place-items: center;
            background: rgba(60, 91, 255, 0.18);
            color: var(--primary-dark);
        }

        .step-meta {
            display: grid;
            gap: 8px;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        .gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: clamp(18px, 3vw, 28px);
        }

        .gallery-card {
            padding: 24px;
            border-radius: var(--radius-medium);
            background: rgba(248, 250, 255, 0.95);
            border: 1px solid rgba(148, 163, 184, 0.18);
            display: grid;
            gap: 14px;
        }

        .gallery-thumb {
            height: 160px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(60, 91, 255, 0.2), rgba(40, 212, 177, 0.32));
            display: grid;
            place-items: center;
            font-size: 2.4rem;
            color: rgba(255, 255, 255, 0.9);
        }

        .gallery-card h4 {
            font-size: 1.05rem;
            color: var(--text-strong);
        }

        .gallery-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        .resource-strip {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: clamp(16px, 4vw, 28px);
        }

        .resource-card {
            padding: 22px;
            border-radius: var(--radius-medium);
            border: 1px solid rgba(148, 163, 184, 0.2);
            background: rgba(248, 250, 255, 0.95);
            display: grid;
            gap: 12px;
        }

        .resource-card strong {
            color: var(--text-strong);
            font-size: 1.02rem;
        }

        .resource-card span {
            font-size: 0.86rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        .site-footer {
            padding: clamp(28px, 4vw, 40px);
            background: rgba(15, 23, 42, 0.85);
            color: rgba(226, 232, 240, 0.85);
            border-top: 1px solid rgba(148, 163, 184, 0.2);
            display: grid;
            gap: 16px;
            text-align: center;
        }

        .site-footer span {
            font-size: 0.9rem;
            letter-spacing: 0.04em;
        }

        .floating-entry {
            position: fixed;
            bottom: 24px;
            right: clamp(16px, 6vw, 48px);
            display: flex;
            align-items: center;
            gap: 12px;
            background: linear-gradient(135deg, rgba(60, 91, 255, 0.92), rgba(40, 212, 177, 0.85));
            border-radius: 999px;
            padding: 14px 20px;
            box-shadow: 0 18px 36px rgba(60, 91, 255, 0.28);
            color: #fff;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

        .floating-entry:hover {
            transform: translateY(-4px);
            box-shadow: 0 24px 44px rgba(60, 91, 255, 0.34);
        }

        @media (max-width: 960px) {
            .nav {
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                                <p class="hero-subtitle">
                                    通过交互式控制与实时反馈，快速理解随机采样一致性算法在复杂噪声环境下的稳定表现。
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                                        <span>Iterations</span>
                                        <strong>120 次</strong>
                                    </div>
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                                        <span>Inliers</span>
                                        <strong>93%</strong>
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                                        <span>Threshold</span>
                                        <strong>0.08 m</strong>
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                                        <span>更新延迟</span>
                                        <strong>38 ms</strong>
                                    </div>
                                </div>
                                <pre class="code-snippet">plane_normal: (0.01, -0.98, 0.19)
inlier_ratio: 0.93
threshold: 0.08 m
update_time: 38 ms</pre>
                                <div class="code-footer">实时刷新 · 支持参数回放与导出</div>
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                    <div class="split-card">
                        <h3>RANSAC 平面拟合</h3>
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                            <li>动态调节迭代次数 / 采样数量 / 内点阈值，观察鲁棒性变化</li>
                            <li>实时渲染内点集合与模型平面，辅以误差统计</li>
                            <li>支持自定义噪声比例与异常点分布，模拟复杂场景</li>
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                            <li>提供处理前后导出能力，便于二次实验</li>
                        </ul>
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                    <div class="split-card">
                        <h3>传感器标定复现</h3>
                        <ul>
                            <li>演示内参、外参对投影效果的影响，支持步进调节</li>
                            <li>结合误差曲线与图像对齐效果，帮助快速定位问题</li>
                            <li>附带标定文件模板与验证步骤</li>
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                        <div class="step-label"><span class="step-number">01</span>数据就绪</div>
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                            <span>拖拽上传点云 / 图像 / 标定文件</span>
                            <span>自动验证维度、大小、字段完整性</span>
                        </div>
                    </div>
                    <div class="timeline-step">
                        <div class="step-label"><span class="step-number">02</span>预处理</div>
                        <div class="step-meta">
                            <span>选择滤波策略、转换坐标系</span>
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                            <span>导出彩色点云 / 报告，支持版本对比</span>
                            <span>生成体验链接，便于团队评审</span>
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            <section id="cases" class="section">
                <div class="section-header">
                    <h2 class="section-title">应用场景与界面预览</h2>
                    <p class="section-desc">覆盖自动驾驶、空间测绘、数字孪生等行业，让算法演示与业务需求形成闭环。</p>
                </div>
                <div class="gallery">
                    <div class="gallery-card">
                        <div class="gallery-thumb">🚗</div>
                        <h4>自动驾驶融合测试</h4>
                        <p>展示车辆周边点云上色效果与障碍物识别边界，配合 RANSAC 平面抽取评估车道平整度。</p>
                    </div>
                    <div class="gallery-card">
                        <div class="gallery-thumb">🏗️</div>
                        <h4>城市空间测绘</h4>
                        <p>支持大场景点云分块加载与结构化导出，便于建筑修复与地形分析。</p>
                    </div>
                    <div class="gallery-card">
                        <div class="gallery-thumb">🎓</div>
                        <h4>教学演示教具</h4>
                        <p>结合交互式控件与示例数据集，让学生直观理解点云融合与鲁棒拟合算法。</p>
                    </div>
                    <div class="gallery-card">
                        <div class="gallery-thumb">📈</div>
                        <h4>数据质量评估</h4>
                        <p>通过密度热力图、RANSAC 内点比例等指标，构建项目级质量追踪机制。</p>
                    </div>
                </div>
            </section>

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                    <h2 class="section-title">资源与支撑</h2>
                    <p class="section-desc">为实验教学与工程实践提供完整的知识库、案例与技术支撑资料。</p>
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                    <div class="resource-card">
                        <strong>快速入门指南</strong>
                        <span>包含点云融合操作步骤、RANSAC 调参建议与常见问题解答。</span>
                    </div>
                    <div class="resource-card">
                        <strong>示例数据集</strong>
                        <span>提供 KITTI、城市道路、室内扫描等多类型数据及标定文件。</span>
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                        <strong>教学课件模板</strong>
                        <span>适用于高校课程与企业培训，支持自定义案例嵌入。</span>
                    </div>
                    <div class="resource-card">
                        <strong>API 与扩展接口</strong>
                        <span>开放后端 API 文档，支持自定义算法模块与自动化流程接入。</span>
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                const nextBtn = slider.querySelector('[data-slider-next]');
                const prevBtn = slider.querySelector('[data-slider-prev]');
                let activeIndex = 0;
                let timerId;

                const updateHeight = () => {
                    const activeSlide = slides[activeIndex];
                    if (activeSlide) {
                        track.style.height = activeSlide.offsetHeight + 'px';
                    }
                };

                const setActive = (index) => {
                    activeIndex = (index + slides.length) % slides.length;
                    slides.forEach((slide, idx) => {
                        slide.classList.toggle('is-active', idx === activeIndex);
                    });
                    dots.forEach((dot, idx) => {
                        const isActive = idx === activeIndex;
                        dot.classList.toggle('is-active', isActive);
                        dot.setAttribute('aria-pressed', isActive ? 'true' : 'false');
                        dot.setAttribute('aria-current', isActive ? 'true' : 'false');
                    });
                    requestAnimationFrame(updateHeight);
                };

                const startAutoPlay = () => {
                    timerId = window.setInterval(() => {
                        setActive(activeIndex + 1);
                    }, 7000);
                };

                const restart = () => {
                    window.clearInterval(timerId);
                    startAutoPlay();
                };

                if (nextBtn) {
                    nextBtn.addEventListener('click', () => {
                        setActive(activeIndex + 1);
                        restart();
                    });
                }

                if (prevBtn) {
                    prevBtn.addEventListener('click', () => {
                        setActive(activeIndex - 1);
                        restart();
                    });
                }

                dots.forEach((dot) => {
                    dot.addEventListener('click', () => {
                        const targetIndex = Number(dot.getAttribute('data-slider-dot'));
                        if (!Number.isNaN(targetIndex)) {
                            setActive(targetIndex);
                            restart();
                        }
                    });
                });

                slider.addEventListener('mouseenter', () => window.clearInterval(timerId));
                slider.addEventListener('mouseleave', restart);
                window.addEventListener('resize', updateHeight);

                setActive(0);
                updateHeight();
                startAutoPlay();
            });
        });
    </script>

</body>
</html>

